Table 1.

Number of artifact-free targets for each run and distribution over different ISIs.

Subject	Number of targets for each run
	Run 1	Run 2	Run 3	Run 4	Run 5	Run 6
S1	26	25	28	27	32	21
S2	31	30	32	33	29	29
S3	23	19	9	27	23	17
S4	21	24	25	25	38	21
S5	23	19	25	23	25	22
S6	29	22	29	30	29	30
Average	25.50 ± 3.89	23.17 ± 4.17	24.67 ± 8.12	26.83 ± 4.02	29.33 ± 5.32	23.33 ± 5.09
Subject	Number of targets for all possible ISI-groups within runs 5 and 6
	Run 5
	ISI-05	ISI-10	ISI-15	ISI-20	ISI-25	ISI-30
S1	4	15	10	3	0	0
S2	14	7	5	2	1	0
S3	0	7	6	6	4	0
S4	0	2	10	20	6	0
S5	0	2	4	10	9	0
S6	8	12	3	4	2	0
Average	4.33 ± 5.72	7.50 ± 5.24	6.33 ± 3.01	7.50 ± 6.75	3.67 ± 3.39	0.00 ± 0.00
	Run 6
S1	4	9	0	6	2	0
S2	1	12	11	3	2	0
S3	1	4	6	5	1	0
S4	0	1	2	6	7	5
S5	0	0	3	11	7	1
S6	19	6	3	0	2	0
Average	4.17 ± 7.41	5.33 ± 4.63	4.17 ± 3.87	5.17 ± 3.66	3.50 ± 2.74	1.00 ± 2.00
	Run 5 + Run 6
Average	4.25 ± 6.31	6.42 ± 4.85	5.25 ± 3.49	6.33 ± 5.31	3.58 ± 2.94	0.50 ± 1.45

For average ERP analysis different ISIs were categorized in two ISI-groups: ISI-short (marked as red) and ISI-long (marked as blue).